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Magnetic interaction reversal in watermelon nanostructured Cr-doped Fe nanoclusters

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journal contribution
posted on 13.11.2013, 00:00 by Maninder Kaur, Qilin Dai, Mark Bowden, Mark Engelhard, Yaqiao Wu, Jinke Tang, You Qiang
Cr-doped core-shell Fe/Fe-oxide nanoclusters (NCs) were synthesized at varied atomic percentages of Cr from 0 at.% to 8 at.%. The low concentrations of Cr (<10 at.%) were selected in order to inhibit the complete conversion of the Fe-oxide shell to Cr2O3 and the Fe core to FeCr alloy. The magnetic interaction in Fe/Fe-oxide NCs (~25 nm) can be controlled by antiferromagnetic Cr-dopant. We report the origin of σFeCr phase at very low Cr concentration (2 at.%) unlike in previous studies, and the interaction reversal from dipolar to exchange interaction in watermelon-like Cr-doped core-shell NCs.

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eng

Language

English

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University of Wyoming. Libraries

Journal title

APPLIED PHYSICS LETTERS

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Faculty Publications - Physics and Astronomy

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Faculty Publications - Physics and Astronomy

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Exports